 Ed AsnerMr. Harris (voice) | Mr. Harris (voice) |
 Angela BassettMiles' Mom (voice) | Miles' Mom (voice) |
 Lucas BlackRandy (voice) | Randy (voice) |
 Theodore BordersMartin at Age 12 (voice) | Martin at Age 12 (voice) |
 LeVar BurtonMartin at Age 26 (voice) | Martin at Age 26 (voice) |
| JJessica GarciaMaria (voice) | Maria (voice) |
 Danny GloverTrain Conductor (voice) | Train Conductor (voice) |
 Whoopi GoldbergMrs. Peck (voice) | Mrs. Peck (voice) |
 Samuel L. JacksonTurner (voice) | Turner (voice) |
 James Earl JonesDaddy King (voice) | Daddy King (voice) |
 Ashley JuddMrs. Dale (voice) | Mrs. Dale (voice) |
 Richard KindMr. Willis (voice) | Mr. Willis (voice) |
 John TravoltaKyle's Dad (voice) | Kyle's Dad (voice) |
 Jaleel WhiteMartin at Age 15 (voice) | Martin at Age 15 (voice) |
 Susan SarandonMrs. Clark (voice) | Mrs. Clark (voice) |
 Oprah WinfreyCoretta Scott King (voice) | Coretta Scott King (voice) |
 Frank WelkerBull Connor / Chihuahua (voice) | Bull Connor / Chihuahua (voice) |
 Yolanda KingChristine King (voice) | Christine King (voice) |
| DDexter KingMartin - Age 34 (voice) | Martin - Age 34 (voice) |
| ZZachary LeighKyle (voice) | Kyle (voice) |
 Robert Ri'chardMiles (voice) | Miles (voice) |
 Adam WylieSam Dale (voice) | Sam Dale (voice) |
 Jess HarnellReporter #1 / Demonstrator (voice) | Reporter #1 / Demonstrator (voice) |
 Joe LalaReporter #2 / Demonstrator (voice) | Reporter #2 / Demonstrator (voice) |
 John WesleyMan / Demonstrator (voice) | Man / Demonstrator (voice) |
| EElizabeth PrimmOld Woman / Demonstrator (voice) | Old Woman / Demonstrator (voice) |
 Jodi CarlisleNot listed | Not listed |
